Gas transport in vertically-aligned carbon nanotube/parylene composite membranes

Lei Zhang; Bin Zhao; Xianying Wang; Youxuan Liang; Hanxun Qiu; Guangping Zheng; Junhe Yang

doi:10.1016/j.carbon.2013.08.007

Gas transport in vertically-aligned carbon nanotube/parylene composite membranes

Lei Zhang, Bin Zhao, Xianying Wang, Youxuan Liang, Hanxun Qiu, Guangping Zheng, Junhe Yang

Research output: Journal article publication › Journal article › Academic research › peer-review

36 Citations (Scopus)

Abstract

Vertically-aligned carbon nanotube (VACNT) composite membranes were fabricated by impregnating carbon nanotube (CNT) forests with poly-para-xylylene (parylene-C) through room-temperature chemical vapor deposition (CVD). Transport properties of diverse gases through the CNT/parylene membranes were investigated. The gas permeances scaled inversely with their molecular weights in accordance with Knudsen model and the value of permeance was about 30 times higher than that predicted by the Knudsen diffusion kinetics, which was attributed to the atomically smooth interiors of CNTs. In addition, the gas permeance values in this work were higher than those reported for other VACNT membranes, due to the smaller membrane thickness and good crystallinity of the CNTs.

Original language	English
Pages (from-to)	11-17
Number of pages	7
Journal	Carbon
Volume	66
DOIs	https://doi.org/10.1016/j.carbon.2013.08.007
Publication status	Published - 1 Jan 2014

ASJC Scopus subject areas

General Chemistry

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10.1016/j.carbon.2013.08.007

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title = "Gas transport in vertically-aligned carbon nanotube/parylene composite membranes",

abstract = "Vertically-aligned carbon nanotube (VACNT) composite membranes were fabricated by impregnating carbon nanotube (CNT) forests with poly-para-xylylene (parylene-C) through room-temperature chemical vapor deposition (CVD). Transport properties of diverse gases through the CNT/parylene membranes were investigated. The gas permeances scaled inversely with their molecular weights in accordance with Knudsen model and the value of permeance was about 30 times higher than that predicted by the Knudsen diffusion kinetics, which was attributed to the atomically smooth interiors of CNTs. In addition, the gas permeance values in this work were higher than those reported for other VACNT membranes, due to the smaller membrane thickness and good crystallinity of the CNTs.",

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T1 - Gas transport in vertically-aligned carbon nanotube/parylene composite membranes

AU - Zhang, Lei

AU - Zhao, Bin

AU - Wang, Xianying

AU - Liang, Youxuan

AU - Qiu, Hanxun

AU - Zheng, Guangping

AU - Yang, Junhe

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Vertically-aligned carbon nanotube (VACNT) composite membranes were fabricated by impregnating carbon nanotube (CNT) forests with poly-para-xylylene (parylene-C) through room-temperature chemical vapor deposition (CVD). Transport properties of diverse gases through the CNT/parylene membranes were investigated. The gas permeances scaled inversely with their molecular weights in accordance with Knudsen model and the value of permeance was about 30 times higher than that predicted by the Knudsen diffusion kinetics, which was attributed to the atomically smooth interiors of CNTs. In addition, the gas permeance values in this work were higher than those reported for other VACNT membranes, due to the smaller membrane thickness and good crystallinity of the CNTs.

AB - Vertically-aligned carbon nanotube (VACNT) composite membranes were fabricated by impregnating carbon nanotube (CNT) forests with poly-para-xylylene (parylene-C) through room-temperature chemical vapor deposition (CVD). Transport properties of diverse gases through the CNT/parylene membranes were investigated. The gas permeances scaled inversely with their molecular weights in accordance with Knudsen model and the value of permeance was about 30 times higher than that predicted by the Knudsen diffusion kinetics, which was attributed to the atomically smooth interiors of CNTs. In addition, the gas permeance values in this work were higher than those reported for other VACNT membranes, due to the smaller membrane thickness and good crystallinity of the CNTs.

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DO - 10.1016/j.carbon.2013.08.007

M3 - Journal article

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JO - Carbon

JF - Carbon

ER -

Gas transport in vertically-aligned carbon nanotube/parylene composite membranes

Abstract

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